CN1918827B - All-optical wavelength converter circuit and wavelength converting method - Google Patents
All-optical wavelength converter circuit and wavelength converting method Download PDFInfo
- Publication number
- CN1918827B CN1918827B CN2005800041763A CN200580004176A CN1918827B CN 1918827 B CN1918827 B CN 1918827B CN 2005800041763 A CN2005800041763 A CN 2005800041763A CN 200580004176 A CN200580004176 A CN 200580004176A CN 1918827 B CN1918827 B CN 1918827B
- Authority
- CN
- China
- Prior art keywords
- wavelength
- information carrying
- carrying signal
- laser diode
- conversion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
- H04B10/43—Transceivers using a single component as both light source and receiver, e.g. using a photoemitter as a photoreceiver
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/50—Amplifier structures not provided for in groups H01S5/02 - H01S5/30
- H01S5/5036—Amplifier structures not provided for in groups H01S5/02 - H01S5/30 the arrangement being polarisation-selective
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/005—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/005—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping
- H01S5/0078—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping for frequency filtering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/50—Amplifier structures not provided for in groups H01S5/02 - H01S5/30
- H01S5/509—Wavelength converting amplifier, e.g. signal gating with a second beam using gain saturation
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
A method and apparatus for transferring information of an optical information-bearing signal from a first wavelength to a second wavelength. The method is implemented in an all optical wavelength converter circuit (200) which includes a laser diode (115) in communication with a polarization controller (210). An information bearing signal having a first wavelength is input to the circuit (605). A polarization controller (210) adjusts (620) the polarization of the information bearing signal. The laser diode (115) receives (625) the polarization-adjusted information-bearing signal and generates (630) a converted information bearing signal by transferring the information of the polarization adjusted information-bearing signal from the first wavelength to the second wavelength.
Description
Technical field
The information that the present invention relates generally to the information carrying signal that will import into is the optical circuit of second wavelength from first wavelength conversion.
Background of invention
Optical communication system uses point-to-point structure that significant message capacity is provided, and a transmitter is directly connected to remote receiver by single optical fiber whereby.A kind of method that is used to further expand this message capacity of generally approval is to use wavelength division multiplexing (" WDM ") system to realize.In wdm system, combination has the source of different wave length (color), and launches the source that this has different wave length (color) by single optical fiber, and these different wave lengths are used to carry they self information.Therefore, use the wdm system of 16 different wave length channels can make fiber capacity increase by 16 times.
Because the development gradually of photosystem, and become and have more complicated topological structure (for example, annular, star etc. therefore) optical-fiber network just needs to seek the method for managing the different channels with different wave length.Dynamically and in the WDM network of standard using wavelength shifter, be used for information is transformed to from the carrier wave light of a wavelength carrier wave of another wavelength.This wavelength shifter has increased flexibility by Route Selection and the channel that reconfigures wherein to network.
The wavelength shifter that some is current is also referred to as optical repeater (optical transponder), and they handle the light signal that imports into of first wavelength by light signal is converted to the signal of telecommunication.Then, the signal of telecommunication is reproduced the light territory (that is, light-electrical-optical, or OEO) of getting back to different wave length.This process is very expensive, complicated, and owing to this process is limited to specific data rate operation, so it has limited application.
Other known wavelength shifter is carried out all-optical methods, and this all-optical methods uses such as four wave mixing (" FWM "), cross-phase modulation, cross-gain modulation technology such as (" XGM ").The circuit of these Technology Need complexity, and efficient is low, therefore can cause high transition loss.For example, use the known wavelength transducer of XGM to need semiconductor optical amplifier (" SOA ") and laser usually, wherein semiconductor optical amplifier serves as frequency mixer, and laser is as oscillator.This system trends towards complicated and expense costliness.
Summary of the invention
Narration briefly, according to a first aspect of the invention, it is second wavelength with the information of information carrying signal from first wavelength conversion that a kind of method is used optical circuit.Described optical circuit has input port, output port and Polarization Controller, this Polarization Controller and laser diode link (incommunication with).Described method comprises: the information carrying signal that will have first wavelength is input in the described input port.Described Polarization Controller receives described information carrying signal, and adjusts the polarization of described information carrying signal.Described laser diode receives the information carrying signal through the polarization adjustment from described Polarization Controller, and, generate the information carrying signal of conversion by being described second wavelength from described first wavelength conversion with described information of passing through the information carrying signal of polarization adjustment.Export the information carrying signal of described conversion from described output port.
According to a second aspect of the invention, a kind of all-optical wavelength converter circuit, the information that is used for information carrying signal is second wavelength from first wavelength conversion, described all-optical wavelength converter circuit comprises: Polarization Controller, be used to receive information carrying signal, and adjust the polarization of described information carrying signal with described first wavelength.The laser diode that links with described Polarization Controller is described second wavelength by the information with described information carrying signal through the polarization adjustment from described first wavelength conversion, generates the information carrying signal of conversion.
According to a third aspect of the present invention, a kind of all-optical wavelength converter circuit, the information that is used for information carrying signal is second wavelength from first wavelength conversion, described all-optical wavelength converter circuit comprises laser diode, described laser diode and described information carrying signal link (incommunication with).Described laser diode uses the cross-gain modulation, is described second wavelength with the information of described information carrying signal from described first wavelength conversion.
According to a fourth aspect of the present invention, a kind of optical wavelength switching device shifter comprises: input is used to receive carrying signal of the first information at least with first wavelength and second information carrying signal with second wavelength.Described switching device shifter comprises at least two all-optical wavelength converter circuits.Each wavelength converter circuit comprises laser diode.In the described wavelength converter circuit the described laser diode of a wavelength converter circuit and described first and described second information carrying signal in an information carrying signal link.The described laser diode of another wavelength converter circuit described in the described wavelength converter circuit and described first and described second information carrying signal in described another information carrying signal link.Described laser diode in each described wavelength converter circuit uses the cross-gain modulation, is another wavelength with the information conversion of described information carrying signal separately.Described switching device shifter comprises output, is used to launch described first and described second information carrying signal, so that described first information carrying signal has described second wavelength, and described second information carrying signal has described first wavelength.
Description of drawings
When reading in conjunction with the accompanying drawings, hereinafter being described in detail of the preferred embodiment of the present invention will be understood better.In order to narrate the present invention, shown presently preferred embodiment in the accompanying drawings.Yet the present invention is not limited to shown accurate configuration and means.In the accompanying drawing:
Fig. 1 is the block diagram of all-optical wavelength converter circuit (100) according to a first advantageous embodiment of the invention;
Fig. 2 is the block diagram of all-optical wavelength converter circuit according to a second, preferred embodiment of the present invention (200);
Fig. 3 is the block diagram of the converter circuit (200) of Fig. 2, and this converter circuit has amplifier (320) at the input of circuit, has filter (325) at the output of circuit;
Fig. 4 is the block diagram of the converter circuit (200) of Fig. 2, and this converter circuit has first amplifier (320) at the input of circuit, has filter (325) and second amplifier (430) at the output of circuit;
Fig. 5 is the block diagram of the converter circuit (200) of Fig. 2, and this converter circuit has filter (325) and amplifier (430) at the output of circuit;
Fig. 6 shows the flow chart of implementing the preferred method of the present invention;
Fig. 7 is the block diagram according to the wavelength switch of the 3rd preferred embodiment of the present invention (700);
Fig. 8 is the block diagram according to the wavelength switch of the 4th preferred embodiment of the present invention (800).
Embodiment
With reference to Fig. 1, shown all-optical wavelength converter circuit according to first preferred embodiment of the invention, represent with 100 usually.The information of the information carrying signal that converter circuit 100 will import into is from first wavelength X
ABe transformed to second wavelength X
BIn the narration below, phrase " wavelength Conversion " and mentioning with " is second wavelength from first wavelength conversion with the information of information carrying signal " of it be used alternatingly, and have identical meanings with them.
According to the present invention, laser diode 115 is preferably non-isolated distributed feed-back type (" the DFB ") laser diode with high slope efficiency and high threshold electric current.Use this Distributed Feedback Laser, be coupled by coupling of high laser fibers and high laser output are provided respectively, in the gain media that can be easy to more make input signal be coupled to laser diode 115.Laser diode 115 preferably has the limit mould (side mode) that has the WDM frequency interval, the grid groove that this WDM frequency interval is matched with International Telecommunications Union (" ITU ") is (for example 50 and 100GHz) at interval, so that promote the input signal coupling that is more prone to.By adjusting input bias current I
bWith the temperature of adjusting laser, can tuning laser diode 115.Alternatively, laser diode 115 can be Fabry-Perot (Fabry-Perot) laser diode, external cavity diode, pulsed laser diode, solid-state diode (for example microplate diode) or fiber laser, and these all do not break away from the spirit and scope of the present invention.
Different with the wavelength converter circuit of routine (for example, relying on those circuit of SOA) preferably occur in laser diode 115 self inside according to the wavelength Conversion of information carrying signal of the present invention.In the present invention, laser diode 115 preferably plays frequency mixer and oscillator these both.Laser diode 115 preferably uses the gain dissipation process of the XGM that takes place in the gain media of laser diode 115 to finish conversion.Like this, by use minimum input power with information from first wavelength X
A(for example, 1550.92nm, ITU grid groove 33) is transformed to second wavelength X
B(for example, 1560.61nm, ITU grid groove 21) can make the conversion efficiency maximization.Wavelength Conversion also can be expanded between different optical communication windows, allow 1310 and the 1550nm window between conversion, and vice versa.Preferably, in the light territory, realize wavelength Conversion fully, and irrelevant with the data rate of information carrying signal.Therefore, compare with the wavelength circuit of routine, wavelength converter circuit 100 provides extra flexibility and cost savings.
With reference to Fig. 2, shown all-optical wavelength converter circuit according to a second, preferred embodiment of the present invention, represent with 200 usually.In converter circuit 200, all adopt identical reference number to carry out mark with those similar elements of discussing about converter circuit 100.
Similar with converter circuit 100, laser diode 115 is by first wavelength X of the information carrying signal that will adjust through polarization
AChange into second wavelength X
B, generate the information carrying signal of changing.After conversion, laser diode 115 is transmitted into Polarization Controller 210 with the information carrying signal of conversion, and this Polarization Controller 210 is adjusted the polarization of the information carrying signal of conversion.Therefore, wavelength converter circuit 200 allows the use of low-cost, commercial available ready-made laser diode, and these diodes provide best power conversion efficiency, thereby minimize transition loss.Alternatively, except using Polarization Controller 210, laser diode 115 with gain medium cross-section of symmetry or accurate symmetry also is suitable as transfer medium, and this laser diode 115 can alleviate or avoid the needs to Polarization Controller, simultaneously transition loss is minimized.Those of ordinary skill in the art will recognize, if there is not additional element in Polarization-Sensitive converter circuit 200, then after the information carrying signal of laser diode 115 output conversions, not need to adjust the polarization of the information carrying signal of this conversion.Just, the information carrying signal of conversion can directly output to route router one 05 from laser diode 115 under the situation of bypass Polarization Controller 210, is used to be transferred to output port (for example, referring to Fig. 6).
With reference to Fig. 3-5, shown the distortion of wavelength converter circuit 200.In Fig. 3, has first wavelength X
AImported information carrying signal into before being input to routing device 105, preferably amplify by amplifier 320.Wavelength converter circuit 200 can comprise optical band pass filter 325, if desired first wavelength X
AHigher inhibition, then this optical band pass filter 325 can be selected second wavelength X
BFilter 325 can be for example tunable optical band pass filter (" TOBPF ").Like this, the information carrying signal that routing device 105 will have first wavelength is directed to Polarization Controller 210, and the information carrying signal of conversion is directed to filter 325.Those of ordinary skill in the art will recognize that the wavelength converter circuit 200 of Fig. 3 can adopt additional amplifier 430 to realize, so that amplify the transitional information carrying signal (referring to Fig. 4) of process filtering at the output port place.Alternatively, wavelength converter circuit 200 can not amplify the information carrying signal that imports into before conversion, still comprise filter 325 and amplifier 430 simultaneously, was used for filtering and amplified the information carrying signal (referring to Fig. 5) of conversion.As mentioned above, any distortion of the converter circuit 200 that shows among Fig. 3-5 can be directly coupled to route router one 05 with the information carrying signal of changing under the situation of bypass Polarization Controller 210.
Export the information carrying signal of the conversion that has data-signal about the wavelength converter circuit 100,200 that Fig. 1-5 discusses, this data-signal is reversed (invert) with respect to the information carrying signal with first wavelength.In some instances, the equipment of the information carrying signal of reception conversion may be to the data-signal sensitivity of this upset.Therefore, two wavelength shifters of back-to-back cascade (cascade), 100,200 (not shown)s, thereby the data-signal of the information carrying signal of this conversion of overturning again, and produce the information carrying signal of second conversion, the information carrying signal of this second conversion has the wavelength that is different from first wavelength, but it keeps original, unturned data-signal.
Those of ordinary skill in the art also will recognize, above-mentioned wavelength converter circuit 100,200 can adopt such equipment or element to realize, be these equipment or element when being designed to information carrying signal in conversion, increase the signal to noise ratio of the information carrying signal of this conversion from laser diode 115 output.
Shown in the flow chart of Fig. 6 according to the present invention the wavelength Conversion of information carrying signal method for optimizing for another wavelength.This method is used optical circuit, and such as using any all-optical wavelength converter circuit of before having discussed with reference to Fig. 1-5, these all-optical wavelength converter circuits are with the wavelength X of information carrying signal
ABe converted to another wavelength X
BStep major part among Fig. 6 is open-and-shut, and therefore the detailed argumentation to each step is not provided.Yet, step 610,615,620,635,640 in steps or a part of step be optionally or can change that this depends on the customized configuration of the wavelength converter circuit 100,200 of use.Just, as the narration of front, wavelength converter circuit 100,200 can comprise the various combination of Polarization Controller 210, filter 325 and amplifier 320,430.Like this, the method for Fig. 6 can use step 605,625 and 630 to realize (showing as the converter circuit 100 of Fig. 1) simply, and these all do not break away from the spirit and scope of the present invention.
With reference to Fig. 7 and 8, shown optical cross connect (" the OXC ") equipment that forms by wavelength shifter according to the present invention.Fig. 7 has shown wavelength switch, represent with 700 usually, wavelength switch comprise two processes multiplexed have a wavelength X
AAnd λ
BImport information carrying signal into.Information carrying signal amplifies by image intensifer 710 alternatively, and separates by light WDM filter 720.Has initial wavelength X
AInformation carrying signal be applied to wavelength shifter 730 so that with this information conversion for having final wavelength X
BSignal, this wavelength shifter 730 is similar with above-mentioned transducer 100,200.Can comprise optical band pass filter 740, so that in initial if desired wavelength X
AHigher inhibition the time, can select final wavelength X
BSimilarly, has initial wavelength X
BInformation carrying signal be applied to second wavelength shifter 730, this second wavelength shifter 730 with this information conversion for having final wavelength X
ASignal.Can also comprise second optical band pass filter 740, so that in initial if desired wavelength X
BHigher inhibition the time, can help to select final wavelength X
AAlternatively, can use WDM filter 750 to reconfigure this two final wavelength, and amplify by second amplifier 710.The signal of conversion is through the output port output of wavelength switch 700.
Similar with wavelength switch 700, Fig. 8 has shown according to another embodiment of the invention, forms the configuration of the All Optical Wave Converter of wavelength switch 800.According to the instruction that comes self-controller 860, amplify and separate by optional image intensifer 810 and have wavelength X by OXC equipment 820
ATo λ
NN multiplexed set of importing information carrying signal into.OXC equipment 820 determines that each information carrying signal that imports into is connected to P
1To P
NIn which port, and determine that thus with each conversion of signals of importing into be which wavelength in N the wavelength available.Like this, has initial wavelength X
AInformation carrying signal be applied to wavelength shifter 830 so that be in remaining N multiplexed wavelength X with this information conversion
BTo λ
NIn have the signal of final wavelength, this wavelength shifter 830 is similar with above-mentioned transducer 100,200.Wavelength switch 800 can also comprise optical band pass filter 840, is used in initial if desired wavelength X
AHigher inhibition the time, select required final wavelength.As controller 860 defineds, can realize wavelength Conversion in an identical manner to other initial wavelength.By using, reconfigure final wavelength alternatively, and amplify by second amplifier 810 to the insensitive smooth WDM filter 850 of wavelength.Through the output port of wavelength switch 800, the signal of output conversion.As long as switching device shifter 700,800 uses and above-mentioned transducer 100,200 similar wavelength shifters 730,830, just can realize the configuration of many different switching device shifters 700,800, these all do not break away from the spirit and scope of the present invention.
Those of ordinary skill in the art will recognize and can make amendment to the above embodiments under the situation that does not break away from main inventive concept.Therefore, will be appreciated that the present invention is not limited to disclosed specific embodiment, and should be considered to be encompassed in the modification in the spirit and scope of the invention that is limited as the appended claim book.
Claims (9)
1. a use optical circuit (100) is the method for second wavelength from first wavelength conversion with the information of information carrying signal, the Polarization Controller (210) that described optical circuit (100) has input port, output port and links with laser diode (115), described method comprises:
(a) the information carrying signal input (605) that will have described first wavelength is in described input port, and described Polarization Controller (210) receives (615) described information carrying signal;
(b) described Polarization Controller (210) is adjusted the polarization of (620) described information carrying signal;
(c) described laser diode (115) (i) receives (625) described described information carrying signal of adjusting through polarization from Polarization Controller (210), be described second wavelength with the information of the information carrying signal of described process polarization adjustment from described first wavelength conversion (ii), generate the information carrying signal of (630) conversion by in described laser diode, using the cross-gain modulation; And
(d) export the information carrying signal of described conversion from described output port,
Wherein, described laser diode is pulsed laser diode or fiber laser.
2. method as claimed in claim 1 further comprises:
(e) amplify the described information carrying signal that (610) have described first wavelength.
3. method as claimed in claim 1 further comprises:
(e) information carrying signal of amplification (645) described conversion.
4. method as claimed in claim 1 further comprises:
The information carrying signal of the described conversion of (e) filtering (640) is to suppress or to eliminate described first wavelength.
5. an all-optical wavelength converter circuit (200), the information that is used for information carrying signal is second wavelength from first wavelength conversion, described wavelength converter circuit (200) comprising:
(a) Polarization Controller (210) is used for (i) and receives the polarization that (615) have the information carrying signal of described first wavelength and (ii) adjust (620) described information carrying signal; And
(b) laser diode (115), itself and described Polarization Controller link, described laser diode (115) is described second wavelength with the information of the information carrying signal of described process polarization adjustment from described first wavelength conversion by use the cross-gain modulation in described laser diode, generate the information carrying signal of (630) conversion
Wherein, described laser diode is a pulsed laser diode.
6. all-optical wavelength converter circuit as claimed in claim 5 (200) further comprises:
(c) at least one filter (325) is used for the information carrying signal of the described conversion of filtering, to suppress or to eliminate described first wavelength; And
(d) routing device (105), itself and described Polarization Controller (210) and described filter (325) link, the described information carrying signal guiding (615) that described routing device (105) (i) will have described first wavelength to described Polarization Controller (210) and (ii) with the information carrying signal guiding (635) of described conversion to described filter (325).
7. the long converter circuit of all-wave as claimed in claim 6 (200) further comprises:
(e) amplifier (320), itself and described routing device (105) link, and are used for amplifying the described information carrying signal that (610) have first wavelength.
8. all-optical wavelength converter circuit as claimed in claim 6 (200) further comprises:
(f) amplifier (430), itself and described filter (325) link, and are used for amplifying (645) described transitional information carrying signal through filtering.
9. an all-optical wavelength converter circuit (200), the information that is used for information carrying signal is second wavelength from first wavelength conversion, described wavelength converter circuit (200) comprising:
(a) Polarization Controller is used for (i) and receives the information carrying signal with described first wavelength, and the polarization of (ii) adjusting described information carrying signal; And
(b) laser diode (115), itself and described Polarization Controller link, described laser diode (115) will be described second wavelength from described first wavelength conversion through the information of the described information carrying signal of polarization adjustment by use the cross-gain modulation in described laser diode, generate the information carrying signal of conversion;
Wherein, described laser diode is a fiber laser.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/774,308 | 2004-02-06 | ||
| US10/774,308 US7139490B2 (en) | 2004-02-06 | 2004-02-06 | All-optical wavelength converter circuit |
| PCT/US2005/002749 WO2005076835A2 (en) | 2004-02-06 | 2005-01-31 | All-optical wavelength converter circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1918827A CN1918827A (en) | 2007-02-21 |
| CN1918827B true CN1918827B (en) | 2010-12-08 |
Family
ID=34826956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005800041763A Expired - Fee Related CN1918827B (en) | 2004-02-06 | 2005-01-31 | All-optical wavelength converter circuit and wavelength converting method |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7139490B2 (en) |
| EP (1) | EP1719271A2 (en) |
| CN (1) | CN1918827B (en) |
| CA (1) | CA2553437A1 (en) |
| WO (1) | WO2005076835A2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100800012B1 (en) | 2006-05-03 | 2008-01-31 | 연세대학교 산학협력단 | Apparatus For Removing Non-linear Distortion Using The Cross Gain Modulation And Removing Method Thereof |
| US9031409B2 (en) | 2011-04-29 | 2015-05-12 | Arris Technology, Inc. | System and method for avoiding upstream interference in RF-over-glass network |
| CN103220063B (en) * | 2013-04-18 | 2015-06-03 | 电子科技大学 | All-optical wavelength routing integrated chip |
| CN105829963B (en) * | 2014-02-13 | 2019-05-21 | 华为技术有限公司 | Wavelength shifter |
| US11211707B1 (en) | 2020-11-13 | 2021-12-28 | Lyteloop Technologies, Llc | Apparatus for broadband wavelength conversion of dual-polarization phase-encoded signal |
| US11346923B1 (en) * | 2020-11-13 | 2022-05-31 | Lyteloop Technologies, Llc | LiDAR system implementing wavelength conversion |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5754714A (en) * | 1994-09-17 | 1998-05-19 | Kabushiki Kaisha Toshiba | Semiconductor optical waveguide device, optical control type optical switch, and wavelength conversion device |
| US6195188B1 (en) * | 1997-05-28 | 2001-02-27 | Canon Kabushiki Kaisha | Optical wavelength conversion apparatus and method |
| US6335819B1 (en) * | 1999-02-19 | 2002-01-01 | University Of Maryland | All-optical regeneration at high bit rates using an electroabsorption modulator |
| CN1376326A (en) * | 1999-09-28 | 2002-10-23 | 加利福尼亚大学董事会 | Integrated wavelength tunable single and two-stage all-optical wavelength converter |
| CN1375957A (en) * | 2001-03-15 | 2002-10-23 | 朗迅科技公司 | Delay interference wavelength conversion and/or 2R regenerator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3438770B2 (en) * | 1998-03-06 | 2003-08-18 | Ｋｄｄｉ株式会社 | Optical digital playback device |
| KR100354336B1 (en) * | 2000-10-17 | 2002-09-28 | 한국과학기술연구원 | Wavelength converter apparatus for ultra-high speed optical signal process |
| KR100541845B1 (en) * | 2002-06-12 | 2006-01-16 | 한국전자통신연구원 | Direct optical modulation type wavelength converter |
-
2004
- 2004-02-06 US US10/774,308 patent/US7139490B2/en not_active Expired - Lifetime
-
2005
- 2005-01-31 WO PCT/US2005/002749 patent/WO2005076835A2/en not_active Application Discontinuation
- 2005-01-31 EP EP05712262A patent/EP1719271A2/en not_active Withdrawn
- 2005-01-31 CN CN2005800041763A patent/CN1918827B/en not_active Expired - Fee Related
- 2005-01-31 CA CA002553437A patent/CA2553437A1/en not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5754714A (en) * | 1994-09-17 | 1998-05-19 | Kabushiki Kaisha Toshiba | Semiconductor optical waveguide device, optical control type optical switch, and wavelength conversion device |
| US6195188B1 (en) * | 1997-05-28 | 2001-02-27 | Canon Kabushiki Kaisha | Optical wavelength conversion apparatus and method |
| US6335819B1 (en) * | 1999-02-19 | 2002-01-01 | University Of Maryland | All-optical regeneration at high bit rates using an electroabsorption modulator |
| CN1376326A (en) * | 1999-09-28 | 2002-10-23 | 加利福尼亚大学董事会 | Integrated wavelength tunable single and two-stage all-optical wavelength converter |
| CN1375957A (en) * | 2001-03-15 | 2002-10-23 | 朗迅科技公司 | Delay interference wavelength conversion and/or 2R regenerator |
Non-Patent Citations (1)
| Title |
|---|
| US 6335819 B1,全文. |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2553437A1 (en) | 2005-08-25 |
| US7139490B2 (en) | 2006-11-21 |
| WO2005076835A2 (en) | 2005-08-25 |
| EP1719271A2 (en) | 2006-11-08 |
| US20050175354A1 (en) | 2005-08-11 |
| CN1918827A (en) | 2007-02-21 |
| WO2005076835A3 (en) | 2005-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5438444A (en) | Optical routing system | |
| CA2244385C (en) | Optical node system for a ring architecture and method thereof | |
| JP4941349B2 (en) | Optical transmission device used in PON system | |
| CN1918827B (en) | All-optical wavelength converter circuit and wavelength converting method | |
| US6535312B2 (en) | Versatile optical switching for wavelength-division multiplexed system | |
| WO2003032021A3 (en) | TRANSMITTER PHOTONIC INTEGRATED CIRCUITS (TxPIC) AND OPTICAL TRANSPORT NETWORKS EMPLOYING TxPICs | |
| JP4576756B2 (en) | Optical signal switching device and method of using the same | |
| US6594046B1 (en) | Level-flattening circuit for WDM optical signals | |
| JP2013528008A (en) | Integrated optical transmitter | |
| KR20040015057A (en) | Bidirectional wdm optical communication network | |
| US6115158A (en) | Optical communication system and optical transmitting device applied thereto | |
| Norte et al. | All-optical TDM-to-WDM data format conversion in a dynamically reconfigurable WDM network | |
| JP2006515134A (en) | Asymmetric optical network traffic flow control | |
| US7394990B1 (en) | All optical wavelength converter | |
| JP4034798B2 (en) | Optical ADM apparatus, system, and method | |
| JP2001168799A (en) | Optical communication system and optical repeater used for the same | |
| JP4029515B2 (en) | Wavelength converter and wavelength converter | |
| US6751416B2 (en) | Reconfigurable optical recognition of bit information in a digital data stream with different bit rates | |
| JP4771784B2 (en) | Optical transmitter and optical transmission method | |
| CN114915347B (en) | Wavelength tunable optical module and automatic wavelength adaptation method thereof | |
| US6753993B1 (en) | Passive optical wavelength converter | |
| KR100325132B1 (en) | Bi-directional Optical Amplifier Using Uni-directional Optical Amplifier | |
| WO2003094398A1 (en) | Optical transport system architecture for remote terminal connectivity | |
| JPH0591052A (en) | Wavelength switching device and method | |
| JP2626215B2 (en) | Gain stabilization control method for semiconductor optical amplifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Georgia, USA Patentee after: Ai Ruishi Technology Co. Address before: American Pennsylvania Patentee before: GENERAL INSTRUMENT Corp. |
|
| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180412 Address after: Georgia, USA Patentee after: ARRIS ENTERPRISES LLC Address before: Georgia, USA Patentee before: Ai Ruishi Technology Co. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101208 Termination date: 20210131 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |